Valve.



Patented JAIL I5, 190].

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' KENNEDW I VALVE. (Appiication filed Sept. 10, 1900.,

(No Model.)

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No. 666,l45. Patented Ian. l5, IBM.

J. KENNEDY.

VALVE. (no "NIH-)4 (Application filed Sam. 10', 1900., 2 sheets-.sheatz.

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Umrnn STATES PATENT OFFICE.

JULIAN KENNEDY, OF PITTSBURG, PENNSYLVANIA.

VALVE.

SPECIFICATION forming part of Letters Patent No. 666,145, dated January15, 1901.

Application filed September '10, 1900. Serial No. 29,615. (No model.)

To all whom, it may cumcerm Be it known that I, JULIAN KENNEDY, ofPittsburg, in the county of Allegheny and State of Pennsylvania, haveinvented a new and useful Improvement in Valves, of'which the followingis a full, clear, and exact description, reference being had to theaccompanying drawings, forming part of this speci fication, in which-Figure l is a sectional side elevation showing a portion of the head ofa blowing-engine provided with my improved valves. Fig. 2 is a partialplan view of the head, partly broken away. Fig. 3 is a perspectivedetail view showing the method of cutting the blank for the valves. Fig.4 is a sectional view on a larger scale, showing one of my valves inclosed position; and Figs. 5 and 6 are respectively a side elevation anda plan view showing a modified form of the valve.

Myinvention relates to valves employed forblowing-engines,compressors,air-pumps,&c., and is designed to provide asimple valve of little weight to avoid the pounding action of theheavier valves now used.

To that end it consists inathin sheet-metal valve having spring-armsintegral with it; also, in a sheet-metal valve having spiralspring-arms, and, further, in the particular construction andarrangement, as hereinafter more fully described, and set forth in theclaims.

In the drawings, referring to the form of Figs. 1 to 4, inclusive, 2represents the head of a blowing-engine having the inclosing case 3,forming a chamber, and 4 is the piston of such engine. The head isprovided with a series of circular holes, in which are securedvalve-seats 5, having curved air-ports 6, arranged in annular form. Thevalve 7 consists of a circular sheet-metal disk having spiralspring-arms 8 8, these arms projecting downwardly against the valve-seatand normally holding the valve open, its outward movement being limitedby an adjustable disk 9, having an annular portion 10, provided with afacing 11 of leather or similar material. This stop or buffer disk maybe adjusted as desired and forms an efiicient stop for the valve, whosemomentum is of course very slight. In Fig. 1 the piston is shown asapproaching the head and forcing the air into the wind-box. On thereturn stroke the valves will be closed, as shown in Fig. 4..

Instead of using the circulardisk with spiral arms out from itsinterior, thus leaving an annular portion for the valve proper, I mayprovide a plain disk 12, as shown in Figs. 5 and 6, this disk having theintegral arms 13 extending outwardly at an angle thereto and preferablysymmetrically located about the body. In this form the valve is securedby screws extending through holes 14 on the ends of the arms. These armsare bent down in the same manner as the spiral arms of the first formand will give substantially similar action.

In the operation of the valves the pressures cause them to rise andfall, the elastic integral arms giving an easy motion Withoutsubstantial jar or pounding. The spiral form of the spring-arms isespecially advantageous, and I desire to cover this form whether thearms are integral with the valve or secured thereto, though it ispreferable to form the arms integral with the valve-body.

Many variations may be made in the form and size of the valve withoutdeparting from my invention.

I claim 1. A valve consisting of a thin sheet-metal disk or plate havingintegral spring-arms; substantially as described.

2. A sheet-metal valve having spiral spring- .arms secured thereto;substantially as described.

3. A sheet-metal valve having integral spring-arms extending at an angleto the plane of the body; substantially as described.

4. A valve comprising a sheet-metal circular disk having internalspiralspring-arms cut from its body; substantially as described.

In testimony whereof I have hereunto set my hand.

JULIAN KENNEDY.

Witnesses:

H. M. GonwIN, O. P. BYRNES.

